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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 298 · 40 sums
TalentJR

The trick (Gunita Samuccayah): Add the digits of a number; keep adding until one digit is left (a total of 9 stays 9). For a product, multiply the digital roots of the two numbers and take the digital root of that. If your answer’s digital root is different, the answer is wrong.

NameDateTime takenScore ___ / 40
  1. 1.Digital root of 6261 =
  2. 2.Digital root of 10516 =
  3. 3.Digital root of 90970 =
  4. 4.Digital root of 38 × 84 =
  5. 5.Digital root of 75 × 86 =
  6. 6.Digital root of 64936 =
  7. 7.Digital root of 95 × 17 =
  8. 8.Digital root of 77 × 90 =
  9. 9.Digital root of 58990 =
  10. 10.Digital root of 17 × 79 =
  11. 11.Digital root of 26 × 28 =
  12. 12.Digital root of 69 × 63 =
  13. 13.Digital root of 77718 =
  14. 14.Digital root of 55 × 29 =
  15. 15.Digital root of 33 × 67 =
  16. 16.Digital root of 54 × 55 =
  17. 17.Digital root of 42908 =
  18. 18.Digital root of 68427 =
  19. 19.Digital root of 22632 =
  20. 20.Digital root of 15202 =
  21. 21.Digital root of 40 × 96 =
  22. 22.Digital root of 34301 =
  23. 23.Digital root of 7083 =
  24. 24.Digital root of 65 × 17 =
  25. 25.Digital root of 20174 =
  26. 26.Digital root of 28133 =
  27. 27.Digital root of 70 × 52 =
  28. 28.Digital root of 83 × 34 =
  29. 29.Digital root of 77 × 70 =
  30. 30.Digital root of 40 × 83 =
  31. 31.Digital root of 32 × 76 =
  32. 32.Digital root of 78 × 73 =
  33. 33.Digital root of 61280 =
  34. 34.Digital root of 91 × 23 =
  35. 35.Digital root of 76367 =
  36. 36.Digital root of 90 × 25 =
  37. 37.Digital root of 4744 =
  38. 38.Digital root of 50 × 99 =
  39. 39.Digital root of 48 × 51 =
  40. 40.Digital root of 88 × 71 =

Answer key

  1. 6
  2. 4
  3. 7
  4. 6
  5. 6
  6. 1
  7. 4
  8. 9
  9. 4
  10. 2
  11. 8
  12. 9
  13. 3
  14. 2
  15. 6
  16. 9
  17. 5
  18. 9
  19. 6
  20. 1
  21. 6
  22. 2
  23. 9
  24. 7
  25. 5
  26. 8
  27. 4
  28. 5
  29. 8
  30. 8
  31. 2
  32. 6
  33. 8
  34. 5
  35. 2
  36. 9
  37. 1
  38. 9
  39. 9
  40. 2

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